1. Home
  2. Directory
  3. Oregon
  4. Portland
  5. Social Worker
  6. NPI Profile

GRACE MAVROMATIS
NPI 1013449271
Social Worker - Clinical in Portland, OR

Active since March 28, 2017PECOS Enrolled
5441 S MACADAM AVE # 5450, PORTLAND, OR 97239(541) 900-4285 Get Directions Write a Review

NPPES record last updated: April 16, 2026. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Apr 16, 2026, May 30, 2019, Aug 23, 2018 and 1 more (4 updates tracked since 2017).

About Grace Mavromatis NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

GRACE MAVROMATIS (NPI 1013449271) is an individual clinical provider in Portland, Oregon, licensed in Oregon (L10996) and active in the NPI registry since March 2017. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1013449271
Entity TypeIndividualFemale
Primary Taxonomy1041C0700X
Provider Legal NameGRACE MAVROMATIS
Location Address5441 S MACADAM AVE # 5450Portland, OR 97239-6106
Mailing Address5441 S Macadam Ave # 5450Portland, OR 97239-6106
Phone(541) 900-4285
Sole ProprietorNo
Enumeration DateMarch 28, 2017
Last NPPES UpdateApril 16, 20264 updates tracked since enumeration
NPPES CertifiedApril 16, 2026
✔ NPI 1013449271 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtySocial Worker · ClinicalBehavioral Health & Social Service Providers
Taxonomy Code1041C0700X
License✔ Licensed in OR · L10996
Definition
A social worker who holds a master's or doctoral degree in social work from an accredited school of social work in addition to at least two years of post-master's supervised experience in a clinical setting. The social worker must be licensed, certified, or registered at the clinical level in the jurisdiction of practice. A clinical social worker provides direct services, including interventions focused on interpersonal interactions, intrapsychic dynamics, and life management issues. Clinical social work services are based on bio-psychosocial perspectives. Services consist of assessment, diagnosis, treatment (including psychotherapy and counseling), client-centered advocacy, consultation, evaluation, and prevention of mental illness, emotional, or behavioral disturbances.
5441 S MACADAM AVE # 5450, Portland, OR 97239
Open in Google Maps ↗

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include BridgeSpan Health Company, Kaiser Permanente, Moda Health Plan, Inc. and more.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Grace Mavromatis is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment– Home Health Agency– Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignment

Medicare enrollment records show Grace Mavromatis reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

County Of Clackamas Office Of County Auditor
5.6 mi
Mental Health (Including Community Mental Health Center)
6605 SE LAKE ROAD
Milwaukie, OR 97222
  • Reassigned Medicare billing, Oregon enrollment
  • 130 clinicians in this Medicare group
NPI 1245269315 (503) 655-8401

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 97239 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$0.00 typical visit price
range $58.99 – $176.88
Typical copayment $0.00 (range $14.74 – $44.22)
Most-billed visit code NA
Established Patient
$73.28 typical visit price
range $19.32 – $144.79
Typical copayment $18.32 (range $4.83 – $36.19)
Most-billed visit code 99213
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Grace Mavromatis's NPI number?

The NPI number for Grace Mavromatis is 1013449271. It was assigned to this individual provider in the NPPES registry on March 28, 2017.

Where is Grace Mavromatis located?

Grace Mavromatis practices at 5441 S Macadam Ave # 5450, Portland, OR 97239. The listed phone number is (541) 900-4285.

What is Grace Mavromatis's specialty?

The primary specialty registered for this NPI is Social Worker, specializing in Clinical, with taxonomy code 1041C0700X.

Is Grace Mavromatis enrolled in Medicare?

Yes. Grace Mavromatis is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Grace Mavromatis's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Grace Mavromatis reassigns Medicare benefits to County Of Clackamas Office Of County Auditor (Milwaukie, OR). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Grace Mavromatis's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Grace Mavromatis accept?

Health plans from BridgeSpan Health Company, Kaiser Permanente, Moda Health Plan, Inc. and Regence BlueCross BlueShield of Oregon list Grace Mavromatis as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Grace Mavromatis was last updated on April 16, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.